================================================================== BUG: KCSAN: data-race in kvm_mmu_notifier_invalidate_range_end / kvm_mmu_notifier_invalidate_range_start read-write to 0xffffc90003fba1b8 of 8 bytes by task 4884 on cpu 0: kvm_mmu_notifier_invalidate_range_start+0x56/0x1e0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:485 mn_hlist_invalidate_range_start mm/mmu_notifier.c:493 [inline] __mmu_notifier_invalidate_range_start+0x22a/0x380 mm/mmu_notifier.c:525 mmu_notifier_invalidate_range_start include/linux/mmu_notifier.h:453 [inline] try_to_unmap_one+0x3b2/0x1670 mm/rmap.c:1426 rmap_walk_anon+0x25f/0x570 mm/rmap.c:1873 try_to_unmap+0x230/0x310 mm/rmap.c:1954 __unmap_and_move+0x371/0x690 mm/migrate.c:1121 unmap_and_move+0x131/0x690 mm/migrate.c:1193 migrate_pages+0x2ad/0xee0 mm/migrate.c:1459 do_mbind+0xe83/0x1070 mm/mempolicy.c:1347 kernel_mbind mm/mempolicy.c:1468 [inline] __do_sys_mbind mm/mempolicy.c:1475 [inline] __se_sys_mbind mm/mempolicy.c:1471 [inline] __x64_sys_mbind+0x142/0x170 mm/mempolicy.c:1471 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffc90003fba1b8 of 8 bytes by task 4874 on cpu 1: kvm_mmu_notifier_invalidate_range_end+0x59/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:519 mn_hlist_invalidate_end mm/mmu_notifier.c:560 [inline] __mmu_notifier_invalidate_range_end+0x18e/0x210 mm/mmu_notifier.c:580 mmu_notifier_invalidate_range_end include/linux/mmu_notifier.h:479 [inline] try_to_unmap_one+0x12b4/0x1670 mm/rmap.c:1715 rmap_walk_file+0x260/0x4f0 mm/rmap.c:1927 rmap_walk mm/rmap.c:1945 [inline] try_to_munlock+0xe7/0x150 mm/rmap.c:1796 __munlock_isolated_page mm/mlock.c:121 [inline] __munlock_pagevec+0x97d/0xc30 mm/mlock.c:322 munlock_vma_pages_range+0x581/0x760 mm/mlock.c:475 munlock_vma_pages_all mm/internal.h:347 [inline] exit_mmap+0x128/0x400 mm/mmap.c:3204 __mmput+0xa2/0x220 kernel/fork.c:1083 mmput+0x38/0x40 kernel/fork.c:1104 exit_mm+0x32f/0x420 kernel/exit.c:501 do_exit+0x41f/0x1690 kernel/exit.c:812 do_group_exit+0xc8/0x170 kernel/exit.c:922 get_signal+0xd5e/0x1440 kernel/signal.c:2770 arch_do_signal_or_restart+0x2a/0x270 arch/x86/kernel/signal.c:811 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x109/0x1a0 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:302 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4874 Comm: syz-executor.3 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================